#include <iostream>
#include <string>
using namespace std;

class Dog
{

private:
    string name;
    int age;

public:
    //
    Dog(string humansName = "A", int humansAge = 25)
        :name(humansName), age(humansAge) 
    {
        cout << name << "=构造=" << age << endl;
    }

    void info()
    {
        cout << name << "=INFO=" << age << endl;
    }
};

int main()
{
    Dog a;
    Dog b = Dog("B", 33);
    //
    a.info();
    b.info();

}